Connected: An Internet Encyclopedia
RFC 959 - 8. CONNECTION ESTABLISHMENT

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### 8. CONNECTION ESTABLISHMENT

The FTP control connection is established via TCP between the user process port U and the server process port L. This protocol is assigned the service port 21 (25 octal), that is L=21.

Next: APPENDIX I - PAGE STRUCTURE

Connected: An Internet Encyclopedia
RFC 959 - 8. CONNECTION ESTABLISHMENT